Time-of-day effects on surgical outcomes in the private sector: a retrospective cohort study.
Kelz RR, Tran TT, Hosokawa P, Henderson W, Paulson EC, Spitz F, Hamilton BH, Hall BL. Time-of-day effects on surgical outcomes in the private sector: a retrospective cohort study. J Am Coll Surg. 2009 Oct; 209(4):434-445.e2.